GPower is a general power analysis program that comes in two essentially equivalent versions: one runs under the Macintosh OS and the other was designed for MS-DOS.
G*Power performs high-precision statistical power analyses for the most common statistical tests in behavioral research, that is:
- t-tests (independent samples, correlations, and any other t-test),
- F-tests (ANOVAS, multiple correlation and regression, and any other F-test), and
- Chi2-tests (goodness of fit and contingency tables).